PEG-160 Sorbitan Triisostearate
AKA “Polyethylene Glycol 160 Sorbitan Triisostearate
Synthetic
Ingredient Facts
Peg-160 sorbitan triisostearate
AKA: Polyethylene Glycol 160 Sorbitan Triisostearate
Synthetic · Cleansing · EWG: 4
Plant-Derived Synthetic
Cleanser
Emulsifier
Synthetic
Not Clean
Sorbitan, poly(oxy-1,2-ethanediyl) derivs. triisooctadecanoates, (160 mol EO average molar ratio) Science: Origin: Botanic/Natural | Process: Ethoxylation | Functions: Cleansing, Surfactant - Cleansing, Surfactant - Emulsifying Safety Ratings: CIR: Safe as used
CAS #
-
Form
Liquid
See origin →
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Removes Impurities
Cleansing Surfactant
Emulsifier
Mixes Oil & Water
Traditional Use
A complex polyethylene glycol-based emulsifier and surfactant developed in the mid-20th century. Created as a synthetic replacement for natural emulsifying agents to improve product stability and texture.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe w/Qualifications
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR